Watchdog
Alarms including AIS, links and communicates with oDraw.
OpenCPN 5.x.x: Drawing tools, Boundaries, EBL and VRM, link to Watchdog for keep in and keep out alarms.
Ocpn_Draw 1.4
OpenCPN 4.x.x: Drawing tools, Boundaries, EBL and VRM, link to Watchdog for keep in and keep out alarms.
SAR (Search and Rescue)
Creates Search and Rescue patterns with desired parameters. See this SARlink for Rescue patterns